Internal-combustion engine



S. L. WALDEN. INTERNAL'coMUsTzoN ENGINE.

APPLICATION FILED AUG. 2|. |917- WITNESSES Y. nu

sul Ll y INTERNAL coMsusnoN ENGINE. APPLICATION FILED A UG.2I,I9|1.

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l NTERNAL-COMBUSTG ENGINE.

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Speciaation of Letters atent. Patgnbd NV, 239 3929 application i'lesAaugust 21, 1917. Serial No. 187,32.

. vTo aZZ whom it may concern;

.Bejit known that l, .SAMUEL L. vl/'Annen a citizen ofthe United"States, and, a resident of Atlantic City,A in the county of Aitkcylinders, means for increasing the eificie'ncy of ignition, and meansfor increasing vthe efficiency` of the exhaust, whereby more thoroughscavenging is effected and bac'l pressure is reduced to a minimum.

The invention/also comprises a simplicity of construction whereby7 theassembling, disassembling and interchanging of `parts are greatlyfacilitated.

lReferring to the drawings, which illus?.

trate merely byway of example a suitable 4embodiment of my .invention-Figure .1 is a vertical section of an engine embodying my invention,taken on line l, l

- of Fig. 2, on a slightly enlarged scale.

' Fig. .2 is a top plan view.

Similar, numerals refer to similar parts throughout the several views. y

As will be noted," invention is shown as applied to enginev cylindershaving shoulders or offset spaces on each side of eachl cylinder. lneach of these offset spaces are provided and arranged, side by side, anadmission valve 3 and an exhaust valve 4. The valvescontrol the portscommunicatingr with the detachable gas supply mani folds6. Each of themanifolds 6 may be provided with an independent carbureter ifso desired,or united together as shown. rllhe exhaust valves a control portscornmunicating with the exhaust manifolds l0, Over each admission valve3 is provided the spark plug 9.

Iii the present example'the two manifolds 6 are shown connected wintlithe carbureter 8 -by thedownwardly extending tube 'i'. The carburetei' 8is `positioned above the cylinders and midway or equi-distaiit betweenthe two manifolds 6. The tube 7 is located vmidway the two ends of theseries of cylinders, so that the carbureter is positioned centrally withrespect tothe several inlet ports and at au elevation abovethe same.This arrangement facilitates the flo-w of gas,

and secures an even and balanced distribution to both sides of eachcylinder.

The arrangement whereby the lianking manifolds are diseiigageablyconnected on ,each side of the cylinders with the connecting tube? overthe middle part of the block of cylinders, and with the carbureter 8connected to the middle part of said tube and above the cylinder block,presents an extremely simple and eliicient arrangement,

said parts being readily removable.

The central Ylocation of s, the carbureter f with a short downwardlyextending conductor, equi-distant to each manifold 6, secures anextremely efficient and balanced de? livery of ,eas to both sides ofeach cylinder'.

.The location of a spark yplug over each intake valve on each side ofeach cylinder, secures the maximum efficiency of ignition.

The arrangement of the exhaust ports on each side of each' cylinder andadjacent the gas intake ports. with ample "exhaust manifolds thereforHanking the cylinders, conu tributes in securing an ample scavenging ofthe cylinder and reduces to a minimum the tendency to back pressure.

rlwo cam sl1afts5 are provided, one on each side of the cylinder blockand operh ate relatively to the crank shaft. Each cam shaft operatesboth admission and exhaust valves, and provides a very simple andeiicient means for valve actuation.

The exhaust valve actuating cams on one side of the engine, arepreferably set to ad Vance the opening of the exhaust valves 0H. thatsideof the cylinder, before ,the openiiw of the exhaust valves on the.other side o'P the cylinder. This secures an initial reduction ofpressure at the beginning of the exliaust. nave the advance'opening',deliver to a separate manifold Vfrom the manifold to which And since theexhaust valves, whichy the'ether exhaust valves deliver, back presj sureis reduced to a marked degree and the art of the les of each cylinder,manifold gas conductors flanking the cylinders and delivering to theadmission ports, a conductor of arch formation delivering to the iankingconductors midway their tWo ends and a earbureter ositioned above theCylinder heads, having its central portion approximately in the planepassing through the axes of the cylinders, and delivering to theconductor of x flanking the cylinders and delivering to the 15 admissionports, a conductor arching above and spanning the flanking Conductorsand delivering thereto at the middle parts thereof and a carbureterdelivering to the spanning conductor, said c-arbureter positioned above20 the cylinder heads and having its vertical axis on a middle line inthe plane passing through the axes of all the cylinders.

SAMUEL LAWRENCE WALDEN.

Witnesses:

CLARENCE LEE COLE, Jr., THERESA M. l/VOOLBERT.

